Packing assembly for water pistols



Feb. 3, 1948. 1. w. ARPIN PACKING ASSEMBLY FOR WATER PISTOLS Filed Sept. 11, 1947 FIG. I.

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Patented Feb. 3, 1948 UNITED STATES PATENT oEFicE' 2.435.521 PACKING ASSEMBLY FOR WATER PISTOLS .101m mmm Amin, vm, N. J. Application September 11, 1947, Serial No. '173,449

This invention relates to a. toy pistol for electing water of the type generally referred to as a water pistol. The present application is a continuation in part of my prior and pending application Serial No. '752,366 and is specifically directed to an external trigger arrangement which effectively enters a water holding cylinder of the pistol and is movable water to escape from the cylinder.

My prior application disclosed a multi-shot water pistol having simplified means of assembly and manufacture and wherein was provided a cylinder and a piston operatively connected to the trigger of the pistol. It is an object of the invention to provide a packing whereby the piston is permitted to reciprocate therethrough in order to effect the water charging action. The piston is formed with a valve permitting recharging of the cylinder and the packing and valved piston are arranged to be assembled as a sub-unit so as to facilitate construction of the device. There is further provided a spring acting upon the trigger so as to maintain it in a normally outward or reset position, the spring also serving to maintain constant pressure or tension on the packing so as to insure against leaking of the water therethrough. Other than the spring, no packing enclosing means is necessary and the spring performs its function effectively regardless of changes in form of the packing through absorption of water or the like. Accordingly, it is possible to achieve a simple and easily assembled unit which is moreover of superior performance because any physical changes in the packing elements are automatically compensated for by the same spring that resets the trigger.

Other objects of my invention will be apparent from the following description, it being understood that the above general statements of the objects of my invention are intended to describe and not limit it in any manner.

Referring to the drawings:

Fig. 1 is a longitudinal section of a water pistol.

embodying the instant invention.

Fig. 2 is an enlarged fragmentary view illustrating the filling action of the cylinder.

Fig. 3 is a separate view of the discharge piston and packing assembly.

Fig. 4 is a cross sectional, fragmentary view along the lines 4 4 of Fig. 2.

The pistol may be of generally conventional design and includes a body I which may be made of plastic material or any other suitable material. Body I0 is hollow so as to define a chamber II `which serves as a reservoir for the water which is 8 Claims. (CL 222-79) lbe filled with water I3 by therein without permitting to be discharged. The butt of the pistol isV provided with a plug l2. Thus, the chamber Il may removing the plug I2 and pouring or otherwise applying the water through the opening in the butt of the pistol.

Within the handle I5 of the pistol is formed a cylinder It which may be round in cross section. Communicating with cylinder I6 is a conduit I1 through which the water streams under pressure when discharged from the cylinder. Conduit l1 directsv the discharge and is of small diameter so that the water may be discharged in a forceful stream through nozzle I8 which may be reduced to increase the force of discharge.

The cylinder I6 is operative t0 prepare a charge of water for discharge through the conduit and to replenish the charge as the water is being ejected. A perforated plate I9 and sealing member Ilia serve as a piston in applying the required pressure to the water charge. Plate or piston i9 is circu` lar and includes an integral, feather-edged crown 20 which is of such flexibility as to form a water seal within the cylinder. Plate I9 is of somewhat smaller diameter than that of cylinder I6 While crown 20 is of larger diameter so that when the piston is assembled into the cylinder, the crown 20 is constricted or forced inwardly by the walls of the cylinder so'as to form an effective water seal due to the inherent spring action of the feather-edge. Plate I9 may be fabricated of thermoplastic material such as polyethylene, polystyrene or the like so as to embody such flexibility. Piston I9 is maintained on a reduced portion of piston rod 2i, the other end 22 of which is enlarged and bears against trigger 23. A washer 2l is disposed adjacent to enlarged end 22. y

The body of the pistol is formed with an annular opening 25 terminating in an inwardly depending shoulder 2S at the entrance of the cylinder I6. Such opening 25 serves as a seat or abutment for the packing which closes the open end of the cylinder and permits the piston rod 2| to reciprocate within the cylinder and extend therefrom so as to c'o-act with the trigger 23. A

vspring 21 is supported on the external portion of rod 2l, the spring serving to both maintain the trigger in its normally outwardl position and to maintain a continuous pressure on the packing so as to prevent displacement thereof and of the piston itself. The function of the spring is most important, therefore, in that it inherently compensates for any change in shape of the packing assembly which may be brought about through moisture absorption or deformation from any cause.

' meets the simulated trigger The packing comprises a pair of rigid discs 2l and 29 which may be of metal or plastic. Maintained between the discs are the washers lll and 3| which may be of felt or any similar iibrous, porous or other soft material. The function of washers 30 and 3l is the conventional one as found in packing arrangements, i. e. to prevent the escape of water while discs 28 and 29 provide both end supports therefor and a terminal for the springy 21. The discs and washers areloosely mounted on rod 2|, as illustrated in Fig. 3,1but when the device is assembled, they are compacted by the spring 21, as illustrated in Fig. 2. Channel or U-shaped trigger 23 is limited in its outward position when i-ts upper, cut-away Vend 32 portion 33 and, as illustrated in Fig. 1, the spring 21 is compressed in this position so as to maintain pressure on the packing even when the trigger is in its outward position and the pistol is not in operation.

The operation of the pistol may be briey described as follows: r

On the firing stroke. the trigger-23 ls pressed inwardly against the action of spring 21. Sealing member |911 is then acted upon by the water charge in the forepart of the cylinder so that it inder so as to force the charge upwardly -through the conduit I1. At the same time that the water charge is ejected, water :from chamber Il is sucked in through opening 34 into the rear part 35 of cylinder I6 so as to flll such rear part. After the termination of the firing stroke, presforepart of the cylinder with the next/charge to be ejected.

A particular advantage in providing the packing arrangement above described is that the rod 2|, spring 21, washers and pressure plate may be assembled as a sub-unit, as illustrated in Fig.

considerable economies the pistol.

A more important packing is the action of the planar deformable washers 30 and 3|. As illustrated by the dotted f direction shown function of the composite lines of Fig. 3, these washers spread radially under pressure so as to complete their sealing function. Such spread is not only in the outward where iirm contact is made with the wall of opening 1. A water ejecting toy pistol comprising a body having a water chamber formed therein, a cylinder for enclosing charges from said water chamber, a manuallyoperated piston including a pis/ton rod for applying pressure to a charge in said cylinder, means to direct the ejection of said charge from the body of the pistol, said body pistol comprising a body having a water chamber formed therein, a cylinder for receiving charges from said water chainber, said cylinder being formed with an open end, a pistonincluding a piston rod for applying preston rod, a packing closing the open end of said reciprocating through said packing in response to the trigger action, and a spring interposed between said trigger and being disposed within said pressedagainst said shoulder by said spring.

3. A pistol according to claim 2 and wherein said packing comprises a flexible. fibrous center and rigid, planar enclosures for said center.

4. A pistol according to claim 3 and wherein said center comprises a planar disc of felt material and said enclosures are a pair of planar metallic discs embracing said felt material, said spring pressing against one of said metallic discs, and the other metallic disc being pressed against said shoulder through the action of said spring.

5. A water ejecting toy pistol comprising -a body having a water chamber formed therein, a cylinder for receiving charges from said water chamber, said cylinder being formed with an open end, a piston including a piston rod for apphing Pressure to a charge in said cylinder, means to direct the ejection of said charge from the body of the pistol, an external trigger for actuating said piston rod and piston, a packing closing the open end of said cylinder, said piston rod reciprocating through said packing in response to the trigger action, and a spring interposed between said trigger and said packing and serving to maintain constant pressure on said packing while normally urging said trigger to an outward or re-set position, said trigger being elongated and being pivoted at one end thereof to said body, the other end thereof serving as a. terminal for said spring, inward actuation of said trigger so as to apply pressure to said charge in said cylinder compressing said spring so as to exert greater pressure on said packing.

6. A water electing toy pistol comprising abody having a water chamber formed therein, a cylinder for receiving charges from said water chamber, a manually operated piston including a Piston rod for applying pressure to a charge in said cylinder, means to direct the ejection of said charge from the body of the pistol, said body being formed with an opening communicating with said cylinder, a shoulder formed between said opening and said cylinder and depending inwardly at the entrance oi' said cylinder, a packing loosely mounted on said piston rod and disposed within said opening whereby said inwardly depending shoulder serves as an abutment for one side thereof, a spring having one end thereof bearing against the other side of said packing and an external trigger acted upon by the other end of said spring whereby said packing is pressed against said shoulder while said trigger is normally maintained in an outward position relative to said body, and is compressed by said spring when said trigger is inwardly actuated.

7. A pistol according to claim 6 andwherein said packing comprises a plurality of separate planar discs all loosely mounted on said piston rod and compacted through the action of said spring.

8. A pistol according to claim 7 and including at least three discs in said plurality of discs, the outside discs being of rigid material and having at least one felt-like deformable disc between them, said outside discs respectively serving as a terminal forsaid spring, and as an inner enclosing layer for the packing and pressed against said shoulder through the action of said spring.

, JOHN ARPIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,151,851 Briggs Mar. 28, 1939 2,172,521 Shoner Sept. l2, 1939 2,423,220 Arpin July 1, 1947 

